Hiroyuki NAKATA

Associate Professor, Department of Electrical and Electronics Engineering, Graduate School of Engineering, Chiba University

Referred Journals

  • Tekkan Akashi, Hiroyo Ohya, Fuminori Tsuchiya, Kenro Nozaki, Hiroyuki Nakata, Variation in the D-region ionosphere after the 2015 Nepal earthquake using LF transmitter signals, Journal of Atmospheric Electricity, 2021, Volume 40, Issue 1, Pages 1-9, Released November 10, 2021, Print ISSN 0919-2050, https://doi.org/10.1541/jae.40.1.
  • Hiroyuki Nakata, Kenro Nozaki, Yuhei Oki, Keisuke Hosokawa, Kumiko K. Hashimoto, Takashi Kikuchi, Jun Sakai, Ichiro Tomizawa, Satoko Saita,Software-defined radio-based HF doppler receiving system. Earth Planets Space 73, 209 (2021). https://doi.org/10.1186/s40623-021-01547-5
  • Kusano, K., Ichimoto, K., Ishii, M. et al. PSTEP: project for solar–terrestrial environment prediction. Earth Planets Space 73, 159 (2021). https://doi.org/10.1186/s40623-021-01486-1
  • Nakata, H., Takaboshi, K., Takano, T., Tomizawa, I. (2021). Vertical propagation of coseismic ionospheric disturbances associated with the foreshock of the Tohoku Earthquake observed using HF Doppler sounding. Journal of Geophysical Research: Space Physics, 126, e2020JA028600. https://doi.org/10.1029/2020JA028600
  • T. Miyashita, Takuya Miyashita; Hiroyo Ohya; Fuminori Tsuchiya; Asuka Hirai; Mitsunori Ozaki; Kazuo Shiokawa; Yoshizumi Miyoshi; Nozomu Nishitani; Mariko Teramoto; Martin Connors; Simon G. Shepherd; Yoshiya Kasahara; Atsushi Kumamoto; Masafumi Shoji; Iku Shinohara; Hiroyuki Nakata; Toshiaki Takano, "ULF modulation of energetic electron precipitation observed by VLF/LF radio propagation," in URSI Radio Science Bulletin, vol. 2020, no. 372, pp. 29-40, March 2020, doi: 10.23919/URSIRSB.2020.9240099.
  • Hozumi K., Ishii M., Saito S., Maruyama T., Nakata H., Tsugawa T. (2019) HF-START: Application in Aid of Radio Communications/Navigation. In: Electronic Navigation Research Institute (eds) Air Traffic Management and Systems III. EIWAC 2017. Lecture Notes in Electrical Engineering, vol 555, pp274-287, Springer, Singapore, https://doi.org/10.1007/978-981-13-7086-1_19, ISBN:978-981-13-7086-1.
  • Hiroyuki Nakata, Akira Takahashi, Toshiaki Takano, Akinori Saito, and Takeshi Sakanoi, Observation of equatorial plasma bubbles by the airglow imager on ISS-IMAP, Progress in Earth and Planetary Science, 5, 66. (2018)
  • Quantitative Estimation of the Ionospheric Disturbances Associated with Earthquakes observed with HF Doppler by a Numerical Simulation of Neutral Atmospheric Waves: Kouhei Yoshikawa, Kazuto Takaboshi, Hiroyuki Nakata, Toshiaki Takano, Mitsuru Matsumura, Hiroyuki Shinagawa, Ichiro Tomizawa,IEEJ Transactions on Fundamentals and Materials, Vol.136, No.5, pp.259-264 (2016).
  • Spectral density analysis of total electron content perturbations associated with earthquakes: H. Nakata, K. Abe, A. Tokunaga, T. Takano, T. Tsugawa, and M. Nishioka, IEEJ Transactions on Fundamentals and Materials, Vol.136, No.5, pp.272-277 (2016).
  • Estimation of direction of arrival of VHF radio wave by interferometers : H. Nakata, K. Kawai, S. Akiyama, T. Chida, R. Tanaka, Y. Kawamura, T. Takano, and S. Shimakura, IEEJ Transactions on Fundamentals and Materials, Vol.136, No.5, pp.278-285 (2016).
  • Reflection height of daytime tweek atmospherics during the solar eclipse of 22 July 2009 : H. Ohya, F. Tsuchiya, H. Nakata, K. Shiokawa, Y. Miyoshi, K. Yamashita, and Y. Takahashi, Journal of Geophysical Research, Vol.117, No. A11, A11310 (2012).
  • The relationship between signal intensity and maximum observed frequency in long-distance propagation of VHF radio waves based on the reflection from the ionosphere : S. Ujigawa, H. Nakata, and S. Shimakura, Journal of Atmospheric Electricity, Vol.31, No.1, pp.63-70 (2011).
  • Alfvenic-coupling algorithm for global and dynamical magnetosphere-ionosphere coupled system : A. Yoshikawa, H. Nakata, A. Nakamizo, T. Uozumi, M. Itonaga, S. Fujita, K. Yumoto, and T. Tanaka, Journal of Geophysical Research, Vol.115, No.A4, A04211, doi:10.1029/2009JA014924 (2010).
  • Long-distance propagation of VHF radio waves due to the effect of the equatorial anomaly : S. Ujigawa, H. Nakata, and S. Shimakura, Journal of Atmospheric Electricity, Vol.29, No.2, pp.115-123 (2009).
  • Observations of equatorial plasma bubbles using broadcast VHF radio waves : H. Nakata, I. Nagashima, K. Sakata, Y. Otsuka, Y. Akaike, T. Takano, S. Shimakura, K. Shiokawa, and T. Ogawa, Geophysical Research Letters, Vol. 32, No. 17, L17110, doi:10.1029/2005GL023243 (2005).
  • Ray-tracing calculation of VHF radio waves scattered by field-aligned irregularities associated with equatorial plasma bubbles: H. Nakata, Y. Akaike, Y. Otsuka, T. Takano, S. Ujigawa, and I. Nagashima, IEEJ Transactions on Fundamentals and Materials, Vol. 124, No. 12, pp.1253-1254 (2004).
  • Ionospheric electric potentials for substorms calculated from a solar wind- magnetosphere MHD simulation and a magnetogram inversion technique : H. Nakata, M. Shinohara, Y. Kamide, T. Ogino, Journal of Geophysical Research, Vol.109, No.A1, A01211, doi:10.1029/2002JA009743 (2004).
  • Near real-time calculation of ionospheric electric fields and currents using GEDAS: H. Shirai, Y. Kamide, E. A. Kihn, B. Hausman, M. Shinohara, H. Nakata, M. Isowa,   T. K. Takada, Y. Watanabe, and S. Masuda, Chinese Journal of Astronomy and Astrophysics, Vol.3, No.4, pp.375-380 (2003).
  • Multipoint observations of a Pi2 pulsation on morningside: The 20 September 1995 event : M. Nose, K. Takahashi, T. Uozumi, K. Yumoto, Y. Miyoshi, A. Morioka, D.K. Milling, P. R. Sutcliffe, H. Matsumoto, T. Goka, and H. Nakata, Journal of Geophysical Research, Vol. 108, No. A5, doi:10.1029/2002JA009747 (2003).
  • A numerical simulation of the Pi2 pulsations associated with the substorm current wedge : S. Fujita, H. Nakata, M. Itonaga, A. Yoshikawa, T. Mizuta, Journal of Geophysical Research, Vol.107, No. A3, doi:10.1029/2001JA900137 (2002).
  • Propagation property of transient MHD impulses in the magnetosphere-ionosphere system : The 2D model of the Pi2 pulsation : S. Fujita, T. Mizuta, M. Itonaga, A. Yoshikawa and H. Nakata, Geophysical Research Letter, Vol.28, No.11, pp.2161-2164 (2001).
  • Ground magnetic perturbations associated with the standing toroidal mode oscillations in the magnetosphere-ionosphere system : H. Nakata, S. Fujita, A. Yoshikawa, M. Itonaga, and K. Yumoto, Earth, Planets and Space, Vol.52, No.9, pp.601-613 (2000).
  • Relationship between the Pi2 pulsations and the localized impulsive current associated with the current disruption in the magnetosphere : S. Fujita, M. Itonaga, and H. Nakata, Earth, Planets and Space, Vol.52, No.4, pp.267-281 (2000).
  • Eigenmode analysis of field line oscillations interacting with the ionosphere- atmosphere-solid earth electromagnetic coupled system :   A. Yoshikawa, M. Itonaga, S. Fujita, and H. Nakata, Journal of Geophysical Research, Vol.104, No.A12, pp.28437-28457 (1999).

学会発表

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